242 lines
11 KiB
C
242 lines
11 KiB
C
// SoftEther VPN Source Code - Stable Edition Repository
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// Cedar Communication Module
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//
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// SoftEther VPN Server, Client and Bridge are free software under the Apache License, Version 2.0.
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//
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// Copyright (c) Daiyuu Nobori.
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// Copyright (c) SoftEther VPN Project, University of Tsukuba, Japan.
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// Copyright (c) SoftEther Corporation.
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// Copyright (c) all contributors on SoftEther VPN project in GitHub.
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//
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// All Rights Reserved.
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//
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// http://www.softether.org/
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//
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// This stable branch is officially managed by Daiyuu Nobori, the owner of SoftEther VPN Project.
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// Pull requests should be sent to the Developer Edition Master Repository on https://github.com/SoftEtherVPN/SoftEtherVPN
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//
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// License: The Apache License, Version 2.0
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// DISCLAIMER
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// ==========
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN, UNDER
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// JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY, MERGE, PUBLISH,
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// DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS SOFTWARE, THAT ANY
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// JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS SOFTWARE OR ITS CONTENTS,
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// AGAINST US (SOFTETHER PROJECT, SOFTETHER CORPORATION, DAIYUU NOBORI OR OTHER
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// SUPPLIERS), OR ANY JURIDICAL DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND
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// OF USING, COPYING, MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING,
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// AND/OR SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
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// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO EXCLUSIVE
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// JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO, JAPAN. YOU MUST WAIVE
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// ALL DEFENSES OF LACK OF PERSONAL JURISDICTION AND FORUM NON CONVENIENS.
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// PROCESS MAY BE SERVED ON EITHER PARTY IN THE MANNER AUTHORIZED BY APPLICABLE
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// LAW OR COURT RULE.
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//
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// USE ONLY IN JAPAN. DO NOT USE THIS SOFTWARE IN ANOTHER COUNTRY UNLESS YOU HAVE
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// A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY CRIMINAL LAWS OR CIVIL
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// RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS SOFTWARE IN OTHER COUNTRIES IS
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// COMPLETELY AT YOUR OWN RISK. THE SOFTETHER VPN PROJECT HAS DEVELOPED AND
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// DISTRIBUTED THIS SOFTWARE TO COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING
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// CIVIL RIGHTS INCLUDING PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER
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// COUNTRIES' LAWS OR CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES.
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// WE HAVE NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
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// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+ COUNTRIES
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// AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE WORLD, WITH
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// DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY COUNTRIES' LAWS, REGULATIONS
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// AND CIVIL RIGHTS TO MAKE THE SOFTWARE COMPLY WITH ALL COUNTRIES' LAWS BY THE
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// PROJECT. EVEN IF YOU WILL BE SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A
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// PUBLIC SERVANT IN YOUR COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE
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// LIABLE TO RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
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// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT JUST A
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// STATEMENT FOR WARNING AND DISCLAIMER.
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//
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// READ AND UNDERSTAND THE 'WARNING.TXT' FILE BEFORE USING THIS SOFTWARE.
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// SOME SOFTWARE PROGRAMS FROM THIRD PARTIES ARE INCLUDED ON THIS SOFTWARE WITH
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// LICENSE CONDITIONS WHICH ARE DESCRIBED ON THE 'THIRD_PARTY.TXT' FILE.
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//
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//
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// SOURCE CODE CONTRIBUTION
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// ------------------------
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//
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// Your contribution to SoftEther VPN Project is much appreciated.
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// Please send patches to us through GitHub.
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// Read the SoftEther VPN Patch Acceptance Policy in advance:
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// http://www.softether.org/5-download/src/9.patch
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//
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//
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// DEAR SECURITY EXPERTS
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// ---------------------
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//
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// If you find a bug or a security vulnerability please kindly inform us
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// about the problem immediately so that we can fix the security problem
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// to protect a lot of users around the world as soon as possible.
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//
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// Our e-mail address for security reports is:
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// softether-vpn-security [at] softether.org
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//
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// Please note that the above e-mail address is not a technical support
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// inquiry address. If you need technical assistance, please visit
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// http://www.softether.org/ and ask your question on the users forum.
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//
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// Thank you for your cooperation.
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//
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//
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// NO MEMORY OR RESOURCE LEAKS
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// ---------------------------
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//
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// The memory-leaks and resource-leaks verification under the stress
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// test has been passed before release this source code.
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// DDNS.h
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// Header of DDNS.c
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#ifndef DDNS_H
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#define DDNS_H
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// Certificate hash
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#define DDNS_CERT_HASH "78BF0499A99396907C9F49DD13571C81FE26E6F5" \
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"439BAFA75A6EE5671FC9F9A02D34FF29881761A0" \
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"EFAC5FA0CDD14E0F864EED58A73C35D7E33B62F3" \
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"74DF99D4B1B5F0488A388B50D347D26013DC67A5" \
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"6EBB39AFCA8C900635CFC11218CF293A612457E4"
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#define DDNS_SNI_VER_STRING "DDNS"
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// Destination URL
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#define DDNS_URL_V4_GLOBAL "https://x%c.x%c.servers.ddns.softether-network.net/ddns/ddns.aspx"
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#define DDNS_URL_V6_GLOBAL "https://x%c.x%c.servers-v6.ddns.softether-network.net/ddns/ddns.aspx"
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#define DDNS_URL2_V4_GLOBAL "http://get-my-ip.ddns.softether-network.net/ddns/getmyip.ashx"
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#define DDNS_URL2_V6_GLOBAL "http://get-my-ip-v6.ddns.softether-network.net/ddns/getmyip.ashx"
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#define DDNS_REPLACE_URL_FOR_EAST_BFLETS "https://senet-flets.v6.softether.co.jp/ddns/ddns.aspx"
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#define DDNS_REPLACE_URL_FOR_EAST_NGN "https://senet.aoi.flets-east.jp/ddns/ddns.aspx"
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#define DDNS_REPLACE_URL_FOR_WEST_NGN "https://senet.p-ns.flets-west.jp/ddns/ddns.aspx"
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#define DDNS_REPLACE_URL2_FOR_EAST_BFLETS "http://senet-flets.v6.softether.co.jp/ddns/getmyip.ashx"
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#define DDNS_REPLACE_URL2_FOR_EAST_NGN "http://senet.aoi.flets-east.jp/ddns/getmyip.ashx"
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#define DDNS_REPLACE_URL2_FOR_WEST_NGN "http://senet.p-ns.flets-west.jp/ddns/getmyip.ashx"
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// For China: Free version
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#define DDNS_URL_V4_ALT "https://x%c.x%c.servers.ddns.uxcom.jp/ddns/ddns.aspx"
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#define DDNS_URL_V6_ALT "https://x%c.x%c.servers-v6.ddns.uxcom.jp/ddns/ddns.aspx"
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#define DDNS_URL2_V4_ALT "http://get-my-ip.ddns.uxcom.jp/ddns/getmyip.ashx"
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#define DDNS_URL2_V6_ALT "http://get-my-ip-v6.ddns.uxcom.jp/ddns/getmyip.ashx"
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#define DDNS_RPC_MAX_RECV_SIZE DYN32(DDNS_RPC_MAX_RECV_SIZE, (128 * 1024 * 1024))
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// Connection Timeout
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#define DDNS_CONNECT_TIMEOUT DYN32(DDNS_CONNECT_TIMEOUT, (15 * 1000))
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// Communication time-out
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#define DDNS_COMM_TIMEOUT DYN32(DDNS_COMM_TIMEOUT, (60 * 1000))
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// Maximum length of the host name
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#define DDNS_MAX_HOSTNAME 31
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// DDNS Version
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#define DDNS_VERSION 1
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// Period until the next registration in case of success
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#define DDNS_REGISTER_INTERVAL_OK_MIN DYN32(DDNS_REGISTER_INTERVAL_OK_MIN, (1 * 60 * 60 * 1000))
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#define DDNS_REGISTER_INTERVAL_OK_MAX DYN32(DDNS_REGISTER_INTERVAL_OK_MAX, (2 * 60 * 60 * 1000))
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// Period until the next registration in case of failure
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#define DDNS_REGISTER_INTERVAL_NG_MIN DYN32(DDNS_REGISTER_INTERVAL_NG_MIN, (1 * 60 * 1000))
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#define DDNS_REGISTER_INTERVAL_NG_MAX DYN32(DDNS_REGISTER_INTERVAL_NG_MAX, (5 * 60 * 1000))
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// The self IP address acquisition interval (If last trial succeeded)
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#define DDNS_GETMYIP_INTERVAL_OK_MIN DYN32(DDNS_GETMYIP_INTERVAL_OK_MIN, (10 * 60 * 1000))
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#define DDNS_GETMYIP_INTERVAL_OK_MAX DYN32(DDNS_GETMYIP_INTERVAL_OK_MAX, (20 * 60 * 1000))
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// The self IP address acquisition interval (If last trial failed)
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#define DDNS_GETMYIP_INTERVAL_NG_MIN DYN32(DDNS_GETMYIP_INTERVAL_NG_MIN, (1 * 60 * 1000))
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#define DDNS_GETMYIP_INTERVAL_NG_MAX DYN32(DDNS_GETMYIP_INTERVAL_NG_MAX, (5 * 60 * 1000))
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// Time difference to communicate with the DDNS server after a predetermined time has elapsed since the VPN Azure is disconnected
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#define DDNS_VPN_AZURE_CONNECT_ERROR_DDNS_RETRY_TIME_DIFF DYN32(DDNS_VPN_AZURE_CONNECT_ERROR_DDNS_RETRY_TIME_DIFF, (120 * 1000))
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#define DDNS_VPN_AZURE_CONNECT_ERROR_DDNS_RETRY_TIME_DIFF_MAX DYN32(DDNS_VPN_AZURE_CONNECT_ERROR_DDNS_RETRY_TIME_DIFF_MAX, (10 * 60 * 1000))
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// DDNS Client
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struct DDNS_CLIENT
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{
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CEDAR *Cedar; // Cedar
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THREAD *Thread; // Thread
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UCHAR Key[SHA1_SIZE]; // Key
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LOCK *Lock; // Lock
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volatile bool Halt; // Halt flag
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EVENT *Event; // Halt event
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char CurrentHostName[DDNS_MAX_HOSTNAME + 1]; // Current host name
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char CurrentFqdn[MAX_SIZE]; // Current FQDN
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char DnsSuffix[MAX_SIZE]; // DNS suffix
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char CurrentIPv4[MAX_SIZE]; // Current IPv4 address
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char CurrentIPv6[MAX_SIZE]; // Current IPv6 address
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UINT Err_IPv4, Err_IPv6; // Last error
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UINT Err_IPv4_GetMyIp, Err_IPv6_GetMyIp; // Last error (obtaining self IP address)
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bool KeyChanged; // Flag to indicate that the key has been changed
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char LastMyIPv4[MAX_SIZE]; // Self IPv4 address that were acquired on last
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char LastMyIPv6[MAX_SIZE]; // Self IPv6 address that were acquired on last
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char CurrentAzureIp[MAX_SIZE]; // IP address of Azure Server to be used
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UINT64 CurrentAzureTimestamp; // Time stamp to be presented to the Azure Server
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char CurrentAzureSignature[MAX_SIZE]; // Signature to be presented to the Azure Server
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char AzureCertHash[MAX_SIZE]; // Azure Server certificate hash
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INTERNET_SETTING InternetSetting; // Internet connection settings
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UINT64 NextRegisterTick_IPv4, NextRegisterTick_IPv6; // Next register time
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UINT64 NextGetMyIpTick_IPv4, NextGetMyIpTick_IPv6; // Next self IP acquisition time
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};
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// DDNS Register Param
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struct DDNS_REGISTER_PARAM
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{
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char NewHostname[DDNS_MAX_HOSTNAME + 1]; // Host name after the change
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};
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// The current status of the DDNS
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struct DDNS_CLIENT_STATUS
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{
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UINT Err_IPv4, Err_IPv6; // Last error
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char CurrentHostName[DDNS_MAX_HOSTNAME + 1]; // Current host name
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char CurrentFqdn[MAX_SIZE]; // Current FQDN
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char DnsSuffix[MAX_SIZE]; // DNS suffix
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char CurrentIPv4[MAX_SIZE]; // Current IPv4 address
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char CurrentIPv6[MAX_SIZE]; // Current IPv6 address
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char CurrentAzureIp[MAX_SIZE]; // IP address of Azure Server to be used
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UINT64 CurrentAzureTimestamp; // Time stamp to be presented to the Azure Server
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char CurrentAzureSignature[MAX_SIZE]; // Signature to be presented to the Azure Server
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char AzureCertHash[MAX_SIZE]; // Azure Server certificate hash
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INTERNET_SETTING InternetSetting; // Internet settings
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};
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// Function prototype
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DDNS_CLIENT *NewDDNSClient(CEDAR *cedar, UCHAR *key, INTERNET_SETTING *t);
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void FreeDDNSClient(DDNS_CLIENT *c);
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void DCGenNewKey(UCHAR *key);
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void DCThread(THREAD *thread, void *param);
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UINT DCRegister(DDNS_CLIENT *c, bool ipv6, DDNS_REGISTER_PARAM *p, char *replace_v6);
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UINT DCGetMyIpMain(DDNS_CLIENT *c, bool ipv6, char *dst, UINT dst_size, bool use_ssl, char *replace_v6);
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UINT DCGetMyIp(DDNS_CLIENT *c, bool ipv6, char *dst, UINT dst_size, char *replace_v6);
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void DCUpdateNow(DDNS_CLIENT *c);
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void DCGetStatus(DDNS_CLIENT *c, DDNS_CLIENT_STATUS *st);
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UINT DCChangeHostName(DDNS_CLIENT *c, char *hostname);
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void DCSetInternetSetting(DDNS_CLIENT *c, INTERNET_SETTING *t);
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void DCGetInternetSetting(DDNS_CLIENT *c, INTERNET_SETTING *t);
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#endif // DDNS_H
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